.middle{
	width: 1000px;
	margin: 0 auto;
	overflow:hidden;
	
}
.middle .logo{
	margin-top:2.5em;
	height: 100px;
	/* border: 1px solid; */
	background-color: #EDEDED;

}
.middle .content{
	width: 600px;
	margin: 100px 10px 0px 0px;
	float: left;
	background-color:#F1F2F2;
	
}
.middle .content .draw_doard{
	width: 400px;
	height: 400px;
	margin: 20px auto auto auto;
	border: 1px solid;	
}

.middle .content .text_part{
	width: 500px;
	height: 100px;
	margin: 20px auto 20px auto;
	border: 1px solid; 
}


.middle .tools{
	width: 375px;
	height: 200px;
	background-color:#F1F2F2;
	
	float: right;
	margin: 100px auto 10px auto;
	
}